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// This file is part of gen, a lightweight C++ template library
// for linear algebra. gen itself is part of the KDE project.
//
// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
//
// gen is free software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the Free Software
// Foundation; either version 2 or (at your option) any later version.
//
// gen is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
// details.
//
// You should have received a copy of the GNU General Public License along
// with gen; if not, write to the Free Software Foundation, Inc., 51
// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. This exception does not invalidate any other reasons why a work
// based on this file might be covered by the GNU General Public License.
#ifndef EI_MATRIXSTORAGE_H
#define EI_MATRIXSTORAGE_H
template<typename Scalar,
int RowsAtCompileTime,
int ColsAtCompileTime>
class MatrixStorage
{
protected:
Scalar m_array[RowsAtCompileTime * ColsAtCompileTime];
void resize(int rows, int cols)
{ assert(rows == RowsAtCompileTime && cols == ColsAtCompileTime); }
int _rows() const
{ return RowsAtCompileTime; }
int _cols() const
{ return ColsAtCompileTime; }
public:
MatrixStorage(int rows, int cols)
{
EI_UNUSED(rows);
EI_UNUSED(cols);
assert(RowsAtCompileTime > 0 && ColsAtCompileTime > 0);
}
~MatrixStorage() {};
};
template<typename Scalar, int ColsAtCompileTime>
class MatrixStorage<Scalar, Dynamic, ColsAtCompileTime>
{
protected:
int m_rows;
Scalar* m_array;
void resize(int rows, int cols)
{
assert(rows > 0 && cols == ColsAtCompileTime);
if(rows > m_rows)
{
delete[] m_array;
m_array = new Scalar[rows * ColsAtCompileTime];
}
m_rows = rows;
}
int _rows() const
{ return m_rows; }
int _cols() const
{ return ColsAtCompileTime; }
public:
MatrixStorage(int rows, int cols) : m_rows(rows)
{
assert(m_rows > 0 && cols == ColsAtCompileTime);
m_array = new Scalar[m_rows * ColsAtCompileTime];
}
~MatrixStorage()
{ delete[] m_array; }
};
template<typename Scalar, int RowsAtCompileTime>
class MatrixStorage<Scalar, RowsAtCompileTime, Dynamic>
{
protected:
int m_cols;
Scalar* m_array;
void resize(int rows, int cols)
{
assert(rows == RowsAtCompileTime && cols > 0);
if(cols > m_cols)
{
delete[] m_array;
m_array = new Scalar[cols * RowsAtCompileTime];
}
m_cols = cols;
}
int _rows() const
{ return RowsAtCompileTime; }
int _cols() const
{ return m_cols; }
public:
MatrixStorage(int rows, int cols) : m_cols(cols)
{
assert(rows == RowsAtCompileTime && cols > 0);
m_array = new Scalar[m_cols * RowsAtCompileTime];
}
~MatrixStorage()
{ delete[] m_array; }
};
template<typename Scalar>
class MatrixStorage<Scalar, Dynamic, Dynamic>
{
protected:
int m_rows, m_cols;
Scalar* m_array;
void resize(int rows, int cols)
{
assert(rows > 0 && cols > 0);
if(rows * cols > m_rows * m_cols)
{
delete[] m_array;
m_array = new Scalar[rows * cols];
}
m_rows = rows;
m_cols = cols;
}
int _rows() const
{ return m_rows; }
int _cols() const
{ return m_cols; }
public:
MatrixStorage(int rows, int cols) : m_rows(rows), m_cols(cols)
{
assert(m_rows > 0 && m_cols > 0);
m_array = new Scalar[m_rows * m_cols];
}
~MatrixStorage()
{ delete[] m_array; }
};
#endif // EI_MATRIXSTORAGE_H
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